condition mean min max 4 h after light 14.530747666666667 8.018263000000001 18.61855 8 h after light 7.785623 4.200392 10.13613 12 h after light 7.642192 6.0407589999999995 10.608889999999999 16 h after light 9.325066333333332 6.963829 10.752369999999999 4 h after dark 7.286193 5.362604 9.75807 8 h after dark 5.1343456666666665 3.7468809999999997 6.050959